Fuel-feed system for aerial machines.



L COATALEN. FUEL FEED SYSTEM FOR AERIAL MACHINES.

APPUCATKON FILED MAYZZH I917- Pafented Apr. 1 1919.

"4 I wa- 'is at rest. I

It has been proposed hitherto to furnish UNITED s'rn rns 'rNr oration LOUIS COATALEN, or WOLVERHAMPTON, ENGLAND, ASSIGNOR or ONE-HALF T0 SUNBEAM MOTOR CAR COMPANY LIMITED, 0F WOLVERHAMPTON, ENGLAND.

FUEL-FEED SYSTEM FOR AERIAL MACHINES.

Application filed May 23, 1917. Serial No. 170,539.

T 0 all. "whom it may concern: I

Be it known that. I, Louis COATALIGN, a subject of the :King of England, residing in Wolverhampton, Staiiordshire, England, have invented certain new and useful Improvements in Fuel-Feed Systems for Aerial Machines, of which the following is a specification, i

On aeroplanes which are used for military and naval purposes itis very important that the petrol feed should not be interrupted should the petrol tank be hit and it is the object of the gplsllt invention to provide simple Ineans jfor; enabling a. supply to be maintained for a certain period even though the main tankis punctured.

Usually: the petrol supply is split up, a number of tanks being used, and in most cases the engine draws from one tank, hereinafter termed the subsidiary tank, which is supplied automatically from the main tanks. In some cases the main tanks are under pressure, but this is objectionable because should one of the main tanks become slightly damaged or punctured by shot, the pressure supply ceases. It is not possible in all cases to locate the main tanks above the subsidiary tank and so obtain gravity feed A further system which might seem practical is that in'which the subsidiary tank contains float operated mechanism, and is connected with the engine inlet pipe so that the depression in the inlet pipe. causes the fuel tobe sucked upjfrom the main tank to the subsidiary tank. This system is not,

however, practicable in the case of an aeroplane engme because generally there is little or no depression in the inlet pipe. 4

According to this invention, a subsidiary tank is employed with. float-controlled valve mechanism of the kind mentioned, and the depression is caused to be generated by asuction pum driven by a smallvap'e wheel so that motion through the an causes the pump to operate and therefore the depres sion is maintained even though the engine S eUitiQatirm of Letters Patent.

, chine can travel a considerable Patented Apr. 1, 1919.

the carburetor of an aeroplane engine with a fuel pump driven by a vane wheel, but the present invention consists, as above stated. in the combination of a pump of this kind with a subsidiary tank and float operated mechanism.

The accompanying drawings show diagrammatically how the invention maybe carried into effect.

The main tauk,A supplies fuel by means of the pipe B to the upper chamber C of the subsidiary tank. The. lower chamber 1) of this supplies the carburetor through the out' let pipe E, and the-pipe Fis a suction pipe connected to an air pump G carrying a vane wheel H. In the top of the main tank A is an air vent J which may be a spring-seated valve.

As the vane wheel H, rotates suction is generated in the chamber C causing fuel to be drawn along the pipe B and into the employ two tanks with automatic feed from the 'main tank to the subsidiary one without. employing pressure or requiring any attention on the part 'ofthe operator. Thus should-the main tank be damaged the medistance on the supp in the subsidiary tan 1 Whatv l claim as my invention and. desire to secure by Letters Patent is 1. In a fuel feed system for aerial ma chines, a subsidiary tank'adapted to feed a carburetor,

a main tank supplyin the subsidiary tank, float operated mcc anisin in the subsidiarvtank. a vane wheel and a suethe oat eperated mechanism.

2. Intfuel feed system for aerial metioh ump driven thereby and connected to chines, a, main tank, a subsidiary tank, a pipe connecting the mam and subs1d1ary operated mechanism within tanks, a float mam-me In testimony whereof I have signed my name to this specxficatmn 1n the presence of two subscrlbmg \vltnesses.

LOUIS COATALEN. Witnesses C. VJ. JONES, L. V. COZENS. 

